x = int(input())

for i in range(8):
    if (400 + 200 * i) <= x <= (599 + 200 * i):
        print(8 - i)
        exit(0) x = int(input()) x int(input()) int input() input for i in range(8):
    if (400 + 200 * i) <= x <= (599 + 200 * i):
        print(8 - i)
        exit(0) i range(8) range 8 if (400 + 200 * i) <= x <= (599 + 200 * i):
        print(8 - i)
        exit(0) (400 + 200 * i) <= x <= (599 + 200 * i) (400 + 200 * i) <= x 400 + 200 * i 400 200 * i 200 i x 599 + 200 * i 599 200 * i 200 i print(8 - i) print 8 - i 8 i exit(0) exit 0 x = int(input()) int(input()) x
x = int(input())

for i in range(8):
    if (400 + 200 * i) <= x <= (599 + 200 * i):
        print(8 - i)
        exit(0)
